I know what an open mind means, I'm just saying that a lot of people who say they are, or are labeled as, "open minded", are just people who will go through a bunch of phases without developing their own style, or niche. For example, a person who will listen to every type of music: They have a phase where they listen to country, they have a phase where they listen to rock, and so on. This person will try so many different things, but they won't really stick with any certain thing. These types of people never really find out who they truly are, because they're always searching for something else. People shouldn't be listening to indie music and dressing up like a hipster, and then all of a sudden become a metalhead or a rapper/gangster the next day. A lot of these people will often just copy the styles or traits of their peers, or change to fit somebody else's mold.
I believe people should do what they enjoy, and be the person they want to be, without going through a bunch of changes. It's okay to have an open mind, and possibly try that new food, or read up on that certain subject, but people shouldn't be so open minded that they're constantly changing who they are. Do you kind of understand what I'm trying to get at? It's hard to explain.